openrisc: Updates after openrisc.net has been lost

The openrisc.net domain expired and was taken over by squatters.
These updates point documentation to the new domain, mailing lists
and git repos.

Also, Jonas is not the main maintainer anylonger, he reviews changes
but does not maintain a repo or sent pull requests.  Updating this to
add Stafford and Stefan who are the active maintainers.

Acked-by: Olof Kindgren <olof.kindgren@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
diff --git a/arch/openrisc/README.openrisc b/arch/openrisc/README.openrisc
index c9f7edf..072069a 100644
--- a/arch/openrisc/README.openrisc
+++ b/arch/openrisc/README.openrisc
@@ -6,7 +6,7 @@
 
 For information about OpenRISC processors and ongoing development:
 
-	website		http://openrisc.net
+	website		http://openrisc.io
 
 For more information about Linux on OpenRISC, please contact South Pole AB.
 
@@ -24,17 +24,17 @@
 toolchain and, perhaps, the architectural simulator.  Steps to get these bits
 in place are outlined here.
 
-1)  The toolchain can be obtained from openrisc.net.  Instructions for building
+1)  The toolchain can be obtained from openrisc.io.  Instructions for building
 a toolchain can be found at:
 
-http://openrisc.net/toolchain-build.html
+https://github.com/openrisc/tutorials
 
 2) or1ksim (optional)
 
 or1ksim is the architectural simulator which will allow you to actually run
 your OpenRISC Linux kernel if you don't have an OpenRISC processor at hand.
 
-	git clone git://openrisc.net/jonas/or1ksim-svn
+	git clone https://github.com/openrisc/or1ksim.git
 
 	cd or1ksim
 	./configure --prefix=$OPENRISC_PREFIX